nalidixic acid

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American Heritage Dictionary:

na·li·dix·ic acid

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('lĭ-dĭk'sĭk) pronunciation
n.
A compound, C12H12N2O3, used to treat infections of the genital and urinary tracts caused by gram-negative bacteria.

[Shortening and alteration of naphthyridine and carboxylic acid, elements of one of its chemical names.]


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A quinolone antibiotic, similar to ciprofloxacin, that is used for the treatment of urinary-tract infections. It is available, on prescription only, as a suspension.

Side effects and precautions:
see quinolones.

Interactions with other drugs:

Melphalan its adverse effects may be increased.

See also quinolones.

Proprietary preparation:
Uriben.

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1-ethyl-7-methyl-1,8-naphthyridin-4-one-3-carboxylic acid; a synthetic 4-quinolone antibiotic that is active against many Gram-negative bacteria. It specifically inhibits bacterial DNA gyrase thereby interfering with DNA synthesis. It has no apparent effect on eukaryotic DNA synthesis.





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A naphthylidine derivative that inhibits DNA synthesis. Used for the treatment of urinary tract infections due to susceptible gram-negative bacteria. Side-effects in dogs include vomiting, diarrhea and seizures.

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n

An antibacterial prescribed in the treatment of urinary tract infections.

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Nalidixic acid
Systematic (IUPAC) name
1-ethyl-7-methyl-4-oxo-[1,8]naphthyridine-3-carboxylic acid
Clinical data
AHFS/Drugs.com Consumer Drug Information
Pregnancy cat. B U.S.
Legal status  ?
Routes Oral
Pharmacokinetic data
Protein binding 90%
Metabolism Partially Hepatic
Half-life 6-7 hours, significantly longer in renal impairment
Identifiers
CAS number 389-08-2 YesY
ATC code J01MB02
PubChem CID 4421
DrugBank DB00779
ChemSpider 4268 YesY
UNII 3B91HWA56M YesY
KEGG D00183 YesY
ChEBI CHEBI:100147 YesY
ChEMBL CHEMBL5 YesY
Chemical data
Formula C12H12N2O3 
Mol. mass 232.235 g/mol
SMILES eMolecules & PubChem
 YesY (what is this?)  (verify)

Nalidixic acid (tradenames Nevigramon, Neggram, Wintomylon and WIN 18,320) is the first of the synthetic quinolone antibiotics. In the technical sense, it is a naphthyridone, not a quinolone: its ring structure is a 1,8-naphthyridines nucleus that contains two nitrogen atoms, unlike quinoline, which has a single nitrogen atom.[1]

Synthetic quinolone antibiotics were discovered by George Lesher and coworkers as a byproduct of chloroquine manufacture in the 1960s.[1]

Nalidixic acid is effective against both gram-positive and gram-negative bacteria. In lower concentrations, it acts in a bacteriostatic manner; that is, it inhibits growth and reproduction. In higher concentrations, it is bactericidal, meaning that it kills bacteria instead of merely inhibiting their growth.

It is especially used in treating urinary tract infections, caused, for example, by Escherichia coli, Proteus, Shigella, Enterobacter, and Klebsiella.. It is also a tool in studies as a regulation of bacterial division. It selectively and reversibly blocks DNA replication in susceptible bacteria. Nalidixic acid and related antibiotics inhibit a subunit of DNA gyrase and induce formation of relaxation complex analogue. It also inhibits the nicking dosing activity on the subunit of DNA gyrase that releases the positive binding stress on the supercoiled DNA. It is the only FDA approved quinolone for treating UTI infections in children (3).

Contents

Adverse effects

Convulsions and hyperglycaemia[2]

Spectrum of Bacterial Susceptibility and Resistance

Aeromonas hydrophila, Clostridium and Haemophilus influenza species are generally susceptible to Nalidixic acid, while other species such as Bifidobacteria, Lactobacillus, Pseudomonas and Staphylococcus are resistant to Nalidixic acid. [3]

See also

References

  1. ^ a b Emmerson, A.; Jones, A. (2003). "The quinolones: decades of development and use". The Journal of antimicrobial chemotherapy 51 Suppl 1 (90001): 13–20. doi:10.1093/jac/dkg208. PMID 12702699.  edit
  2. ^ Fraser AG, Harrower AD (December 1977). "Convulsions and hyperglycaemia associated with nalidixic acid". Br Med J 2 (6101): 1518. doi:10.1136/bmj.2.6101.1518. PMC 1632822. PMID 589309. //www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1632822. 
  3. ^ "Nalidixic acid spectrum of bacterial susceptibility and Resistance". http://www.toku-e.com/Upload/Products/PDS/20120522005430.pdf. Retrieved 14 May 2012. 
3 Barkley, Nghiem, (Sept. 2011) "AAP reviews 

use of systemic and topical Quinolones" Medscape educational briefs

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